Introductory Physics Homework Help Forum

Free introductory physics homework help step by step from qualified mentors. Algebra and calculus based general physics homework. High school and undergraduate level.

Threads

I don't understand this simplification question for Power

  • chroncile
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Calculating air pressure given density ρ = 1.29 kg/m³ and k = 1.4

  • BenjoNi
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1

SUVAT: Solving for t When s=(u+v)t/2

  • Dan1601
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When will the pilot hit the ground while flying over sloping terrain?

  • crybllrd
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4

Finding the x and y components of this vector

  • kevnm67
  • · Replies 6 ·
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6

Kinematics moving particle problem

  • crybllrd
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2

Star ship acceleration physics

  • ms245004
  • · Replies 3 ·
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3

Effects of high and low pressure on the human body.

  • SrEstroncio
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3

Force on charges separated by grounded spherical condcutor

  • Leah_Sh
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1

Finding a Particle's Position with Given Velocity and Time

  • ms245004
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2

Different round objects of same mass on an incline

  • zorro
  • · Replies 10 ·
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10

Which Football Kicks Higher, Travels Farther, or Stays Airborne Longer?

  • needhelpfast
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6

Rate of change of a right triangle

  • vande060
  • · Replies 6 ·
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6

Dimensional Analysis of pV and Kave: Are They Equivalent to Work?

  • mrandymcnutt
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1

Uniform Accelerated Motion - Ticker Tape Experiment

  • Iniuria12
  • · Replies 2 ·
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2

Cart through two photo gates 3.0 m apart in 4.2 s

  • pokeefer
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3

Projectile: Find initial velocity without time

  • JJBladester
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2
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1

What is the horizontal range of a projectile fired into the air?

  • ihatecats2014
  • · Replies 1 ·
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1

How Does Evaporation Relate to Internal Energy and Molecular Kinetics?

  • Jeffopolis
  • · Replies 15 ·
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15
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3

Charge redistribution when a sphere touches R, S, and T sequentially

  • sitthegamsat
  • · Replies 3 ·
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3

Fairly easy acceleration problem stumping me

  • alpinecg
  • · Replies 3 ·
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3

2D Kinematics with multiple unknown variables.

  • Blbuford
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1

Phase Difference for Interference of Traveling Waves on a Stretched String

  • crazy_craig
  • · Replies 2 ·
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2

How Much Work to Stretch a Bungee Cord 1 Meter?

  • Amber_
  • · Replies 6 ·
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6

Energy conservation and circular motion

  • w3390
  • · Replies 4 ·
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4

How to add and resolve vectors?

  • chanella35
  • · Replies 4 ·
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4

How does sound travel from a vibrating string to our ears?

  • donkeycopter
  • · Replies 11 ·
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11

Time for Sun to disappear when standing up after lying down on beach

  • rwx1606
  • · Replies 6 ·
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6

Solving Resonance: Ideas to Get Started

  • LTU83
  • · Replies 2 ·
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2

Finding electric force between two particles

  • theskyisgreen
  • · Replies 2 ·
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2

Tyrolean Traverse/Static Equilibrium Problem

  • ConstableZiM
  • · Replies 1 ·
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1

Solving Physics Vector Problems: Adding, Subtracting, and Finding Equilibrium

  • kittykatxox
  • · Replies 4 ·
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4

How Do You Calculate Initial Velocity of an Arrow Shot Straight Up?

  • swatmedic05
  • · Replies 6 ·
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6

Which statements about uniform circular motion are true?

  • needhelpfast
  • · Replies 4 ·
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4

How Much Additional Mass Can a Floating Air Mattress Support?

  • mizzy
  • · Replies 1 ·
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1

How Do You Calculate the Nominal Interest Rate Compounded Differently?

  • aisha
  • · Replies 5 ·
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5

Trying to Understand Accel Vectors

  • eriadoc
  • · Replies 6 ·
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6

How Do You Convert Plane Speed from km/h to m/s?

  • Blaz3r
  • · Replies 3 ·
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3

Heat and internal energy of water temperature

  • mizzy
  • · Replies 6 ·
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6

Concave Mirror Homework - Find Object Dist.

  • Boxter
  • · Replies 9 ·
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9

Maximum speed of 0.40 kg mass on spring compressed 4.0 cm

  • mizzy
  • · Replies 14 ·
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14

What is the acceleration of the block in this system?

  • ooohlala
  • · Replies 1 ·
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1

Find position and velocity at specific time

  • JJBladester
  • · Replies 9 ·
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9

Properties of Light: Straight Line or Transverse Wave?

  • logearav
  • · Replies 2 ·
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2

How Do You Calculate Energy Transfer in a Circuit Component?

  • mjwilson94
  • · Replies 3 ·
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3

Parallel resistance and heat problem

  • KauGan
  • · Replies 2 ·
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2

Vector magnitude and displacement

  • jpd5184
  • · Replies 5 ·
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5

How Do You Calculate the Correct Components of a Force Along Tether Lines?

  • quantum_enhan
  • · Replies 3 ·
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3
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2

What is the Maximum Horizontal Distance for a Gazilcher Launch?

  • xSPARX
  • · Replies 1 ·
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How do I calculate the time of flight for a horizontally fired cannonball?

  • needhelpfast
  • · Replies 2 ·
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2

Initial Velocity and Acceleration-

  • needhelpfast
  • · Replies 2 ·
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2

Concave lens equation: why does n₂ cancel in the derivation?

  • Daniiel
  • · Replies 4 ·
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4

Calculating Work and Power from Ocean Water Pumping

  • Ogakor
  • · Replies 1 ·
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1

Issues finding time in acceleration problem

  • bracing
  • · Replies 3 ·
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3

Finding angles vectors make with the positive x-axis

  • uchicago2012
  • · Replies 9 ·
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9

Finding vectors in Cartesian Coordinates

  • uchicago2012
  • · Replies 1 ·
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1

Acceleration, velocity and position

  • npena29
  • · Replies 1 ·
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1

Solving Frictionless Horizontal Motion: Find Block's Speed

  • jti3066
  • · Replies 4 ·
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4

Magnitude of displacement across a room diagonal

  • jpd5184
  • · Replies 1 ·
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1

Why do different pipes/strings make different sounds?

  • donkeycopter
  • · Replies 6 ·
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6

Gradient of Wavelength vs Period Graph?

  • donkeycopter
  • · Replies 1 ·
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1

Average Velocity Vector Diagram

  • ThomasMagnus
  • · Replies 3 ·
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3
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1

Ball falls from top of cliff; kinematics

  • dansunefusee
  • · Replies 4 ·
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4

Unknown distances, constant speed, average velocity

  • oceanbunny
  • · Replies 1 ·
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1

Finding Vector Lengths: Can't figure out what I am doing wrong

  • lanzjohn
  • · Replies 1 ·
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1
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1

What is the speed of the electron as it strikes the second plate?

  • popo902
  • · Replies 2 ·
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2

How Does a Car Overtake a Truck After a Traffic Light Turns Green?

  • CHARG3RS
  • · Replies 1 ·
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1

Calculating angle between two vectors

  • jpd5184
  • · Replies 1 ·
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1

How to Build a Cart Using Household Materials for a Physics Project

  • Bologna
  • · Replies 4 ·
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4

Use conservation of energy to determine the angular speed of a spool

  • mizzy
  • · Replies 5 ·
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5

How Do You Rearrange Kinematic Equations Effectively?

  • Siege
  • · Replies 2 ·
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2

What types of equations are more general than IVPs?

  • farleyknight
  • · Replies 5 ·
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5

What is the initial speed of the water

  • swatmedic05
  • · Replies 3 ·
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3

Calculating Force on Windscreen from Water Spray

  • kalupahana
  • · Replies 7 ·
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7

A Matter of Wheels and Trains and The Spin of the Earth?

  • modulus
  • · Replies 1 ·
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1

What is the acceleration of the rocket?

  • kalupahana
  • · Replies 1 ·
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1

What Are the Velocities of the Broken Parts in a Plane Explosion?

  • kalupahana
  • · Replies 1 ·
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1

How Long Until the Police Car Overtakes the Speeder?

  • delfam
  • · Replies 3 ·
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3

Conceptual Question on the Force of a relaxed spring

  • Kibbel
  • · Replies 1 ·
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1

RAIN FALL QUESTIONS-CAN'T FIND PART 4 about kg

  • tmoney23
  • · Replies 6 ·
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6

RLC circuit - total impedance,phasor analysis (mainly checks)

  • pat666
  • · Replies 4 ·
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4

How Do You Calculate Fringe Spacing in Single Slit Diffraction?

  • pat666
  • · Replies 13 ·
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13

WHAT IS THE WORK DONE THAT IS DISSIPATED AS HEAT?

  • jinx007
  • · Replies 9 ·
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9

Finding Tension and w2: Solving for Angle Alpha

  • dvsumosize
  • · Replies 5 ·
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5

Method of Image Charges - Range of validity of solutions

  • RoyalCat
  • · Replies 1 ·
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1

Solving Coulombs Law & Trig via Diagram

  • prof chaos
  • · Replies 1 ·
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1

Conceptual question on black bodies

  • fluidistic
  • · Replies 1 ·
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1

Determin the Electric Potential Difference

  • kvarner83
  • · Replies 1 ·
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1

An electron is shot between plates

  • Gizmo44
  • · Replies 4 ·
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4

Motion Equation with constant speed (Time sensitive )

  • lanzjohn
  • · Replies 2 ·
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2

Particle motion in polar coordinates without given acceleration

  • lax1113
  • · Replies 1 ·
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1

Tarzan's Swing: What's the Tension in the Vine?

  • seto6
  • · Replies 7 ·
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7

Horizontal Range and Maximum Height of a Projectile

  • darbeecakes
  • · Replies 3 ·
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3

What are the Tensions in a System of Fixed Point Charges?

  • scott85213
  • · Replies 2 ·
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2

1 Dimensional Kinematics Problem

  • Skizye
  • · Replies 5 ·
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5